Engine-valve.



No. 685,207. Patented Oct. 22, |901. C. G. HOLMBEBG.

ENGINE VALVE.

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ENGINEv VALVE.

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A no. 605,207. Patented oct'. 2'2, |901.

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(Application med nu. 14, 1901.)

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PATENT OFFICE.

CHARLES GUSTAVE HOLMBERG, OF \VOONSOOKET, SOUTH DAKOTA,

ASSIGNOR TO AN NA HOLMBERG,

JOHN M. XVHEELER, AND LOREN Hv PIER, OF N'VOONSOCKET, SOUTH DAKOTA.

ENGINE-VALVE.

SPEGIFEGATION forming part of Letters Patentl No. 685,207', dated.Y October 22, 1'901 Original application tiled October 4, 190i), Serial No. 31,975. Divided and this application filed January 14, 1901. Serial No.4a219.

To LZ1 whom, it' may concern:

Be it known that I, CHARLES GUsTAvE HOLMBERG, a citizen of the United States,'and a resident of VVoonsocket,h in the county of Sanborn and State of South Dakota, haveinvented a new andlmproved Engine-Valve, of which the following is a full, clear, and exact description, this'being a division of the application for Letters APatent of the United States for an engine, Serial No. 31,975, tiled by me on October 4, 1900.

The object of the invention is to Vprovide certain new and useful improvements in engine-Valves, whereby the admission and eX- haust of the motive agent to and from the' engine-cylinder are properly controlled and the desired cut-off of themotive agent is obtained.

The invention consists of novel features and parts and combinations of the same, as will be fully described hereinafter and then pointed out in the claims.

A practical embodiment of the `invention is representedin ythe accompanying drawings, forming a part of this specificatiom'in which similar characters of reference indicate corresponding parts in all the views.

`Figure l is a sectional plan view of the improvement as applied. Fig. 2 is a sectional side elevation of the same on the line 2 2 in'Figl l. Figs. 3 and 4 are vlike views of the same irwith parts in a different position. Fig. 5 is a sidefelevation of one of the valves with parts yin section, and Fig. 6 is a `sectional plan view of the same.

The engine on which the improvement is applied is provided with a 'cylinder A, in which oscillates piston B in the form of diametrically-extending wings B' B2 and secured on a cylinder-shaft C, mounted to turn in suitable bearings in the heads of the cyli inder A and connected with the main shaft in the manner more fully shown and described in the application above referred to, so that furthe-r description of this part of the engine is not deemed necessary.

The cylinder A is formed with two working chambers A A2, formed by partitions A2 A4, integral with the cylinder, and into said working chambers A A2 extend the wings or piston-heads B B2 of the piston B, as is (No model.)

t plainly shownin the drawings. The piston- 'vheads B B2 stand diametrically opposite each other, and when the engine is running the motive agent acts simultaneously on the said piston-heads in such al manner that one is moved in its working chamber from the partition A3 to the partition At, while the other piston-head is moved in its working chamber,'but from the partition Al to the partition A2. In the partitions ABA4 are formed valve-'chests G G', respectively, containing oscillating valves H H', respectively, for con-` trolling the motive agent to and from the working chambers A A2, as hereinafter more fully explained.

In one of the heads ot the cylinder A are formed ports a b, leading at their inner ends to the valve-chests G G and connected at their-outer ends with the motive-agentsup ply pipes 1*-1', respectively, connected with the boiler-pipe 12, containing a valve 12 under the control of the governor If. The valve;

chestsG G are also connected by ports c c' with the working chamber A', and similar ports d d' connect the said chests with the chamber A2. The ports c d and c d are controlled by the valves H H, respectively, so that 4motive agent is admitted to one chamber A or A2, while exhaust takes place from the other chamber through the'corresponding valve, the exhaust motive agent passing from chest extensions G2 GB to eXhaust-pipesJ J', leading to the outer air. y

i The valves H H are alike 'in construction, and each is provided with a mainl valve H2 and an'auxiliary valve Hhaving lcut-off anges H4, as is plainly indicated in the drawings. The main valve H2 is secured on a hollow stem H5, and the auxiliary valve H2 is secured on a stem H6, mounted to turn in the hollow stem H5. (See Figs. 5 and 6.) The hollow stem H5 is mounted to turn in suitable bearings carried by the heads of the cylinder A, and the outer ends of the stems H5 carry arms H2, pivotaliy connected with each other by a link H2, so that when a rocking motion is given to one of the stems H5 then both stems for the valves H H' are simultaneously rocked. The stems H6 for the two valves H H are similarly connected with each others-*that is, they are provided with IOO arms H2, pivotally connected with each other by a link H10, and consequently when one of the stems HG is rocked a similar rocking motion is given to the other stem.

In the cut-oit anges H4 for the valve H are formed ports e f, adapted to register alternately with the ports c d in the partition A3,

and similar ports ef are also formed in the cut-oit anges H4 for the valve H', and the ports e' f are adapted to successively register with the ports c and dl. (See Figs. 2 and 3.)

In order to impart the desired oscillating motion to' the valves, the stem H5 of the valve II' is provided with an arm K, arranged to receive a rocking motion from the main driving-shaft F by a suitable mechanism, and said arm K is formed on its upper end with shoulders K' K2, adapted to alternately engage the free end of an arm K3, secured to the stem H3, so that the rocking motion of the latter is controlled from the stem H5, it being understood that upon swinging the arm K in one direction one shoulder K' or K2 engages the arm KB and carries the latter along, and whenA the arm K is on the return stroke the arm K3 remains at a standstill for the time being until the other shoulder K2 or K vengages the arm K3 and again carries the same along.

Now when the engine is in motion an intermittent swinging motion is given to the arm K, so that the two valves H H are simultaneously actuated to cause the valve H to f admit live motive agentto one working cham- ,l ber and to allow the exhaust of the otheny working chamber to pass to the open air,

while the other valve H admits motive agent l to the last-mentioned chamber and allowsk escape of exhaust motive agent from the first working chamber. Thus when the several parts are in the position shown in Fig. 2 the live motive agent passes through the valve H and the registering ports e cinto the chamber A behind the piston-head B', so as to turn the piston B in the direction of the arrow a', it be'- ing understood that a like action takes place against the other piston-head B2 by the motive agent passing through the valve H' and the registering ports f and CZ into the working chamber A2.

W'hen the ports e and f are in register with the ports c and d and a sufficient quantity of motive agent has been admitted to the chamber A', as described, then the rocking motion given to the arm K causes the main valve H2 to turn, while the auxiliary valve H3 remains stationary for the time being, it being understood that when this movement of the main valve takes place the motive agent is gradually out oft from the ports eand f', and consequently from the ports c and d and the working chambers A A2. Vhen the motive agent has finally been cut off,the shoulder K or K2 on the rocking arm K engages the free end of the arm K3 and carries the same along, so that the main valves H2 and their auxiliary valves H3 move together, the motive agent being cut olf during the time the pistonheads B B2 are on their outward stroke. Thus if the motive agent is steam it works expansively in the working chambers A' A2.

When the piston-heads have reached the ends of their strokes, the position of the valves is reversed by the action of the parts connected for the purpose with the arm K, so that the motive agent is again admitted to the working chambers to move the pistonheads B B2 on their return stroke-that is, in the inverse direction of the arrow d'. (See Fig. 3.)

When the arm K is rocked in an inverse direction,then the arm K3 remains stationary for a time to cause a movement of the main valves H2 of the valves H H for cutting-olf purposes, as above explained.

Having thus fully described myinvention, I claim as new and desire to secure by Letters Patent 1. A valve for controlling the admission and exhaust of a motive agent, the said valve comprising a main valve, and an auxiliary valve controlled from said main valve, the auxiliary valve having cut-0E flanges each provided with a port adapted to register alternately with ports in the valvechest, and a cut-out portion or cavity for the passage of the exhaust, as set forth.

2. A valve for controlling the admission and exhaust of a motive agent, the said valve comprising a main valve and an auxiliary valve controlled from said main valve, the auxiliary valve having ports for the admission of the motive agent, and a cnt-out portion or cavity for the passage of the exhaust, an arm on the main valve and arranged to receive an intermittent rocking motion, and an arm on the said auxiliary valve and adapted to be alternately engaged by shoulders on the main-valve arm, as set forth.

3. A valve for controlling the admission and exhaust of a motive agent, the said valve comprising a main valve, and an auxiliary valve controlled from said main valve, the auxiliary valve having cut-01T ianges each provided Witha port adapted to register alter- IIO nately with ports in the valve-chest, and a cut-out portion or cavity for the passage of -the exhaust, a hollow stem mounted to turn and on which the main valve is secured, a stem mounted to turn in said hollow stem and carrying the auxiliary valve, an arm on the hollow stem and arranged to receive an intermittent rocking motion, the said arm being provided on its upper end with spaced shoulders, and an arm on the stem of the auxiliary valve and/adapted to be alternately engaged by the said shoulders, as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CHARLES GUS'IAVE IlOLlllllERG. Witnesses:

L. H. PIER, Y S. J. MITCHELL. 

